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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Mar26-08 12:32 PM
0 29,772
I came across another good search engine today looking for a datasheet, so I thought I'd try starting this thread for...
Dec3-13 12:53 AM
27 55,318
Even as a kid, I saw beauty in old devices. That made me want to understand how they worked. I had lots of old...
Jul21-14 12:14 AM
21 4,963
ansoft, maxwell Sticky Thread Pinned: Maxwell 3D (ANSOFT) ( 1 2 3 ... Last)
Dear all, I'm a new user and I like to exchange information about the use of this tool. From my point of view tool...
Jul5-14 05:32 AM
193 85,708
I've occasionally been asked by some of the students I've mentored or TA'd over the years, "What's in your toolbox? ...
Jul13-14 10:34 PM
63 76,725
Hello, I haven't learned anything about micro controllers yet but I wanted to get a head start since I hear that...
Jul21-14 08:30 AM
21 6,137
The idea of current has been presented to me so many different ways I thought id try and find out a little more into...
Mar4-12 04:16 PM
3 1,078
Hi all, I am currently looking for a new book on electrical engineering. I was recently reading Sedra and Smith but...
Apr2-12 12:35 AM
1 831
Hello, I'm a little confused about synchronous machines. Specifically, I don't understand how the armature coils are...
Apr29-06 03:28 AM
4 2,184
I am guessing that it is easier to produce that way, and gives it more flexibilty. Are these the reasons for wires...
Jun28-12 04:28 AM
14 2,731
I have recently pulled apart two old RC helicopters for their parts and built an RC car out of it. It is pretty basic,...
Dec22-13 05:46 AM
5 605
Hello. To give some more information on what I am to use this for: I have two signals. Both are periodic sine...
Feb20-13 08:34 AM
6 1,067
Does anyone know how to figure out how to calculate a motor's output when used as a generator based on the...
Nov30-09 07:15 PM
4 3,665
I'm studying the ethernet devices and the transmission system over cable wire and i'm interested especially on the...
Jan28-10 07:25 PM
Bob S
2 625
Hi all I am reading an article and I need some help to understand it. They describe a device they made in which...
Jun2-11 02:10 PM
8 2,422
I've been trying to build an electric motor for my 11th grade physics class and I'm having some problem. I'm trying...
May23-04 08:43 PM
2 3,280
Hello all. I am working on a problem for class that is taking some time data and changing it to frequency data. I am...
Apr1-08 08:54 AM
4 7,690
Okay, so my basic understanding of an NP junction (diode) is as follows. When no external voltage is applied, some of...
Jan18-10 08:07 AM
4 1,212
Through our research we discover that an AC induction motor can act as a DC amplifier, as long as there is torque...
Jan5-10 05:19 PM
Phi Tran
0 2,722
I am reading a book on Control Theory by Norman Nise. I don't get his description of forced and natural response...
Sep12-11 02:09 AM
6 1,672
All the books I have read say that when a proportional derivative controller is used the natural frequency remains the...
Sep12-11 07:08 PM
jim hardy
1 2,071
Since the deci in decibels means 10, why is decibels of Magnitude in the Bode plot calculated as 20log instead of...
Nov19-11 04:15 AM
I like Serena
1 1,892
I am learning to draw Bode Plots. I am able to figure out ωgc, ωpc, Phase Margin & Gain Margin graphically from the...
Dec13-11 08:37 AM
4 1,808
I was looking at some of those battery operated candles that flicker like real candles, and asked myself, "how hard...
Jul12-06 07:16 AM
5 3,265
1-in conductors E(tan)1=D(tan)1=0 but this is illogical because E(tan)&D(tan) are external fields and don't depend...
Jan27-11 03:36 AM
0 2,482
Hey guys, Basically, I have been doing some testing with regards to tactile vibrations (I know that isn't very...
May3-10 06:45 AM
2 22,137
I'm not sure if this question belongs in the forum or the physics forum, I guess I'll post it there as well. I'm...
Jan18-10 04:06 AM
11 19,012
What is the typical Amperage that comes into a normal household?
Jun4-10 10:34 AM
18 4,250
I had electronics last semester, and we went over some digital briefly at the end. I think we learned a bit about...
Apr10-07 07:45 PM
4 1,219
I'm attempting to do a term paper about the above title. There are a lot of potential alternatives to chemical rocket...
Jun29-14 10:56 PM
11 1,340
Hello I'm researching IIR filters: Butterworth, Chebyscheff 1 and Elliptic types. I've been using MatLab to...
May5-05 03:13 PM
2 2,044
hey dudes so i've a lightbulb that says 60w 230v so i figure it draws 60/230 amps so i figure its resistance is...
Oct19-07 10:00 PM
4 32,570
hey guys, i could as easily post this in an automotive type forum but i'm not a member of any!! no specific car...
Mar13-08 08:05 PM
7 2,593
Hello knowledgeable ones! I need your help to make my life easier; Background. I need to turn on fans every...
Oct6-11 07:26 PM
jim hardy
2 900
Hey guys I've been toying with the idea of building a diy digital annometer I'm hoping it can be achieved with a...
Jun7-11 03:58 PM
17 4,255
Hey guys i'm putting together a shopping list for my first microcontroller project. One thing i need is a slotted...
Jun6-11 04:51 PM
3 2,955
hello wise ones. I've recently taken delivery of some 7 segment led displays for a small project, (i'm brand new at...
Jun6-11 08:28 PM
3 1,366
I'm learning MSDD. There is a statement that says differential encoding is required for MSDD to work. I can't wrap my...
Aug1-07 05:40 AM
0 1,567
Hello everyone! I'm trying to figure out how to calculate the output voltage of a photodiode in the photovoltaic...
Jun27-13 11:01 AM
7 808
Hi: I need to learn about micro controllers and micro processors. Coming from a Physics background I need a starter...
Jun17-10 03:41 PM
10 1,705
can any tell me why the diffraction pattern formed (when light interacts with acoutic wave ) gives +1 oreder on one...
Aug29-06 11:31 PM
0 1,956
This isn't a homework question... I'm just trying to understand Mosfets in general. I've been reading about them, and...
Feb15-10 09:07 PM
1 892
hi, how does one connect a telephone line with a DTMF decoder(e.g CM8870). i.e which telephone wires(of the 2 pairs...
Oct31-08 12:55 PM
1 2,786
I'm searching for a datasheet. This IC device is a two-wire, differental, digital transmitter. Each leg has three...
Jul4-08 04:12 PM
4 1,199
How much electrical energy does it take to manufacture a solar cell? I'm curious about the break-even time. Silicon...
Jul24-08 09:19 PM
2 1,956
I've assumed, I could add circuit error, at least to good approximation. For instance, two 5%, 100 resistors in series...
Aug3-08 08:25 PM
13 7,177

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